I have my entrepreneurial idea on IoT based. So I can better understand this technology. Secondly, I have used multiple of hardware for IoT and have worked on professional projects based on IoT. I have also skills on app development, the interfacing techniques of mqtt broker with hardware and mobile app. Plus I have multiple certifications and currently doing more. My document will be consist of starting from basic IoT knowledge then step by step implementation from simple to complex. After reading this, reader will be amazed and would want to work on it. Because I have worked on different hardware, I will add applications, hardware, implementation with cost of hardware.